libffi/testsuite/libffi.call/cls_8byte.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Depending on the ABI. Check overlapping.
   4    Limitations: none.
   5    PR:          none.
   6    Originator:  <andreast@gcc.gnu.org> 20030828  */
   7
   8 /* { dg-do run } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_8byte {
  12   int a;
  13   float b;
  14 } cls_struct_8byte;
  15
  16 cls_struct_8byte cls_struct_8byte_fn(struct cls_struct_8byte a1,
  17                             struct cls_struct_8byte a2)
  18 {
  19   struct cls_struct_8byte result;
  20
  21   result.a = a1.a + a2.a;
  22   result.b = a1.b + a2.b;
  23
  24   printf("%d %g %d %g: %d %g\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
  25
  26   return  result;
  27 }
  28
  29 static void
  30 cls_struct_8byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  31                     void* userdata __UNUSED__)
  32 {
  33
  34   struct cls_struct_8byte a1, a2;
  35
  36   a1 = *(struct cls_struct_8byte*)(args[0]);
  37   a2 = *(struct cls_struct_8byte*)(args[1]);
  38
  39   *(cls_struct_8byte*)resp = cls_struct_8byte_fn(a1, a2);
  40 }
  41
  42 int main (void)
  43 {
  44   ffi_cif cif;
  45   void *code;
  46   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  47   void* args_dbl[5];
  48   ffi_type* cls_struct_fields[4];
  49   ffi_type cls_struct_type;
  50   ffi_type* dbl_arg_types[5];
  51
  52   cls_struct_type.size = 0;
  53   cls_struct_type.alignment = 0;
  54   cls_struct_type.type = FFI_TYPE_STRUCT;
  55   cls_struct_type.elements = cls_struct_fields;
  56
  57   struct cls_struct_8byte g_dbl = { 1, 2.0 };
  58   struct cls_struct_8byte f_dbl = { 4, 5.0 };
  59   struct cls_struct_8byte res_dbl;
  60
  61   cls_struct_fields[0] = &ffi_type_sint;
  62   cls_struct_fields[1] = &ffi_type_float;
  63   cls_struct_fields[2] = NULL;
  64
  65   dbl_arg_types[0] = &cls_struct_type;
  66   dbl_arg_types[1] = &cls_struct_type;
  67   dbl_arg_types[2] = NULL;
  68
  69   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  70                      dbl_arg_types) == FFI_OK);
  71
  72   args_dbl[0] = &g_dbl;
  73   args_dbl[1] = &f_dbl;
  74   args_dbl[2] = NULL;
  75
  76   ffi_call(&cif, FFI_FN(cls_struct_8byte_fn), &res_dbl, args_dbl);
  77   /* { dg-output "1 2 4 5: 5 7" } */
  78   printf("res: %d %g\n", res_dbl.a, res_dbl.b);
  79   /* { dg-output "\nres: 5 7" } */
  80   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_8byte_gn, NULL, code) == FFI_OK);
  81
  82   res_dbl = ((cls_struct_8byte(*)(cls_struct_8byte, cls_struct_8byte))(code))(g_dbl, f_dbl);
  83   /* { dg-output "\n1 2 4 5: 5 7" } */
  84   printf("res: %d %g\n", res_dbl.a, res_dbl.b);
  85   /* { dg-output "\nres: 5 7" } */
  86
  87   exit(0);
  88 }